Hey all.... I have a 2003 6.o Power stroke. Has 160k miles on it. I had the FICM rebuilt by Ed last year... No other work has been done...

Here is the issue:
On cold starts, every so often, the engine will crank and crank but not start. I can try it several times, then all of a sudden, she'll fire right up and run good with no other issues.

I don't even know where to start...any Suggestions?

Thanks!

 

Mike, we all run gauges that reads all the sensors and shows live time data as the engine is running. I use Scangauge2, it can be had at auto zone for $ 160. Might sound like a lot but an EGR valve in one of these things cost $300 bucks so you can play an expensive guessing game or get a set of gauges and buy the right parts.
wild guess would a HPOP issue

 

That's what worries me. It seems like when it's a cold start if I keep cranking on it, eventually it will fire up and run fine. On warm starts there is no issue. No trouble lights on when it's running, so I don't even know if it's throwing any codes at all. Could it be a leak in the high oil pressure system that is causing this? I do know that something is causing it not to get fuel correctly at startup...

Thanks for any inputs...

 

Fal, I went and purchased a scangauge today. As I said before, I only have issues with cold start. I had my truck running and warmed up when I got the scangauge on it and set up, and here is what I got:

(readings are at idle and operating temp. Idle at about 580, temp around 170)

IPR is at 24.2%
ICP is at 645 psi

I do know that these have to do with the Hpop, but I'm not sure what is considered normal. Tomorrow morning, I'm going to go out and see if the issue is there again and see what I can come up with a cold truck.

 

Watch the ICP while its cranking and won't start, it needs to be over 500 before it will command the injectors to fire, also note the ICPV at KOEO (key on engine off )

 

Your in good hands here with mustang 309 along for the ride. When you post # do it like this. If trucks tuned return to stock, warm engine up to 190* or close. All accessories off. Post 3 sets of #s 1st KOEO, 2nd. Low idle ( truck runs on its own) 3rd High idle ( 2500 rpm)
If no one posts X -Gauges before I get home from work I'll do some research and get you a list. I'll also try to find the Pids showing what all the #s should be for all the sensors.You made a wise investment getting Gauges, it will pay for it's self the first time you diagnos your engine your self an save the $180 shop fee. Going to work now B BACK SOON

 

GAUGE TXD RXF RXD MTH NAME

FL 07E02216C1 0462451606C1 3010 000101480000 Fuel Level


VRF 07E0221155 046205110655 3010 006433330000 VREF (CALIBRATION VOLTAGE INPUT)
BAT 07E0221172 046205110672 3008 000100010000 BATTERY VOLTAGE

ECT 07E0221139 046205110639 3008 000200010000 ECT Degrees F
EOT 07E0221310 046245130610 3010 00090005F060 EOT Degrees F
TFT 07E1221674 046205160674 3010 000100080000 TFT Degrees F
IAT1 07E0221123 046205110623 3010 000100010000 IAT1 Degrees F
IAT1 07E0221123 046205110623 3008 000200010000 IAT1 ALT SETUP
IAT2 07E02216A8 0462051606A8 3010 000100010000 IAT2 DEGREES F
MAT 07E02216E0 0462051606E0 3010 001200050020 Manifold Air Temperature (*F)

ICP 07E0221446 046205140646 3010 003900640000 ICP PSI
ICV 07E02216AD 0462451606AD 3010 004827100000 ICP voltage
IPR DC% 07E0221434 046285140634 3008 0DCA03E8000A IPR %
INJPW 07E0221410 046245140610 3010 044C04E2FFF1 FPW Microseconds (table)
INJPW 07E0221410 046205140610 3010 000800010000 FPW Microseconds (modified)
ITM 07E02209CC 0426850906CC 3010 000A00400000 INJECTOR TIMING BTDC (DEGREES)

MFD 07E0221412 046245140612 3010 006400100000 MFDES Mg per Stroke
MFD 07E0221412 046245140612 3010 000100100000 MFDES (ALT)
VFDES 07E0221411 046245140611 3010 006400100000 VFD Cubic mm
MAF 07E0221671 046245160671 3010 000100010000 Mass Air Flow (Gram/S)
MFV 07E022177 046245110677 3010 000100250000 MAF Voltage (volts)

FMP 07E02209D0 0462450906D0 3010 006401000000 FICM Main Power (Volts 47-48)
FVP 07E02209CE 0462450906CE 3010 006401000000 FICM VEHICLE POWER (SHOULD BE 12 VOLTS)
FLP 07E02209EF 0462450906CF 3010 006401000000 FICM LOGIC POWER (SHOULD BE 12 VOLTS)
FSN 07E02209CD 0462050906CD 3601 000100010000 FICM-sync 0=NO, 1=Yes


SYC 07E02209CD 0462050906CD 3000 000100010000 SYC CAM/CRANK POSITION SENSOR SYNC (1= IN SYNC)
SYC 07E02209CD 0462050906CD 3001 000100010000 SYC ALTERNATE
SYC 07E02209CD 0462050906CD 3701 000100010000 SYC ALTERNATE

FSS 07E022099F 04620509069F 3010 000100040000 FAN SPEED SENSOR
FDC 07E022091F 04624509061F 3010 013103E80000 FAN SPEED DUTY CYCLE

Baro 07E0221127 046285110627 3008 003100500000 BAR PSI
EBP 07E0221445 046285140645 3010 001D00500000 EBP PSI
BST 07E0221440 046285140640 3010 01220320???? PSI/BST MAP Modified signal PLUG IN VALUE FROM TABLE FROM YOUR MAP
MAP 07E0221440 046285140640 3010 012203200000 MAP EXTENDED RANGE

14.0 -- FF74
14.1 -- FF73
14.2 -- FF72
14.3 -- FF71
14.4 -- FF70
14.5 -- FF6F
14.6 -- FF6E
14.7 -- FF6D
14.8 -- FF6C
14.9 -- FF6B
15.0 -- FF6A

 

I had my FICM updated by Ed in March of '12. Got it back and mine did the same thing. This is no knock on Ed's work but the update changed something. I put up with it for about 18 months then my fun meter pegged. My problem was a very dirty IAT2 sensor. Easy to pull and clean. With 160K miles on your truck, do yourself a favor and pull and clean the IAT2 sensor. Let us know if it was dirty and if it fixed the problem.

Ed

 

IAT2 huh, I'm willing to learn something new. Probably needs cleaned anyway.
Bulrydr_1, the IAT2 sensor is Located behind the oil filter screwed into the Intake manifold. Use a 13/16 deep well socket to remove. Dip only the tip of the sensor in solvent. Don't get any solvent on the upper electrical part of the sensor. The sensor has 4 little windows in the tip, the top two windows has small wires in them be careful in this area so as not to damage the wires. The O ring on the sensor is reusable.

NCCPARTSMAN comes thru again , what an asset to this forum he is.
I'll look for the pids and get you a link.

 

OK mike found it and bumped it to the top. Open the thread titled Engine operating values. At the end of the first post there is a PDF file you can down load and print. It has all the numbers you need for all the sensors. This should keep you busy for a while see you next year. Tim

 

Thanks a ton guys! This morning I went out and it fired right up..no issues at all. I'm definitely going to pull the sensor tomorrow. Hopefully it's something stupid simple...I'll keep you posted

 

NCC and Fal...got a ton of the gauges programmed and downloading the pic now. Tomorrow I'll be cleaning the IAT2 sensor. Again, hopefully at simple fix. I think I feel better now that today everything was normal. It seems if it were the hoop itself, it would be all the time. I'm thinking maybe a dirty or a bad sensor...much cheaper and easier fix!

Mike